0	1.0
1	1.5
2	1.75
3	1.875
4	1.9375
5	1.96875
6	1.984375
7	1.9921875
8	1.99609375
9	1.998046875
10	1.9990234375
11	1.99951171875
12	1.999755859375
13	1.9998779296875
14	1.99993896484375
15	1.999969482421875
16	1.9999847412109375
17	1.9999923706054688
18	1.9999961853027344
19	1.9999980926513672
20 	1.9999990463256836